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Proceedings Paper

Beam quality enhancement for unconventional laser formats
Author(s): Antonio Lapucci; Marco Ciofini
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Paper Abstract

In this paper we review the general problem of Optical Beam Quality for beams that are not simple axial symmetric gaussian beams. We discuss the theoretical studies and experimental results obtained on the beams emitted by compact, medium power, diffusion cooled CO2 lasers and laser arrays. Our case-studies include a linear array of 9 CO2 lasers and an annular laser aperture with array-like emission produced by a Talbot cavity. We show that aspects of beam propagation that were founded on Gaussian beam theory need to be re-evaluated when considering these more complex beams. For example different polarization states in array elements lead to different field distributions in the far field and thus to a different beam quality. Furthermore we comment on the limited information given for such structured beams by traditional Beam Quality Factors, such as M2, established for nearly-Gaussian beams.

Paper Details

Date Published: 9 April 2003
PDF: 6 pages
Proc. SPIE 5131, Third GR-I International Conference on New Laser Technologies and Applications, (9 April 2003); doi: 10.1117/12.513516
Show Author Affiliations
Antonio Lapucci, Istituto Nazionale di Ottica (Italy)
Marco Ciofini, Istituto Nazionale di Ottica (Italy)

Published in SPIE Proceedings Vol. 5131:
Third GR-I International Conference on New Laser Technologies and Applications
Alexis Carabelas; Giuseppe Baldacchini; Paolo Di Lazzaro; Dimitrios Zevgolis, Editor(s)

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